Hoisting-machine.



No. 893,919. PATENTED, JULY 21, 1908.

' G. E. GRANT.

HOISTING MACHINE. ArrLfoAnou FILED AUG. 1.1907.

4 SHEETS-SHEET l.

No 893,919. IPATENTED- JULY 2 1983' G. E. GRANT. HOISTING MACHINE.

APILIOATZOH FILED we. .1, 1907.

No. 898,919. PATENTED JULY 21, 1908. 0. E. GRANT:

HOISTING MACHINE. AYPLIGATION FILED AUG.1.19D7.

4 SHEBTS-SEEET 3.

V f In? 065 No. 893,919. PATENT-ED JULY "21, 1908.

0.3. GRANT. HOISTING MACHINE.

APPLICATION FILED AUG. 1.1907.

' Chicago,

sT TEsr TENT OFFICE.

CHARLES E. GRANT, CHICAGO, ILLINOIS.

HoIsrmG-Mlicmim.

are, 393,919.

Specification of Letters Patent.

Patented. July 21, 190s.

-. Tcal l whom it may concern:

Beit known that I, CHARLES E. GRANT, acltizen of the United ta te's,residing at 7 1n the county of Cook and State of Illinois, have inventeda new and useful Improvement in Hoisting-Machines, of which thefollowing is a s ecification. My invention're ates tothat classofmachines used in or about buildings under construction for raising .thebuilding material,

I andwhich are operated by horse power.

' Theobject of my invention is to provide a shift mechanism forming partofthe machine which is operable at the point where the' load is removedfrom the car and at thepoint where the horse power is applied to themachine, ashift mechanism that can be operate'd'gby'hand to reverse andstop and lock the power mechanism at any point in its movement, that.will provide for one circular dlrectlonj for the movement of the horse,

lessenthe distance to be traveled and reduce the-work of the horse to aminimum, and

' that will allow the relative positions of-the horse'and cars to beadjusted as the conditions .of the surroundings may require.

:The manner in which I accomplish my ob ject is described in thefollowing specifica- Figure 1 is a top plan view of the hoisting machineshowing the relative positions of the cars, cables and ower machine.

Fig. 2 is a vertical view of t e same relation of parts as in Fig. 1,the'viewbeing from the front end of the power machine towards the cars.Fig. 3 is a side elevation, the parts being in the same relativepositions as in Figs. 1 and 2.. Fig. 4 is an enlarged view of part ofthe shift mechanism located at the top of that part of the guide framedesignated as the orse. Fig.5 is an enlarged front view of that art ofthe mechanism shown in Fig. 4. Fig. is a to plan view of part of thepower machine an mechanism, the main gear not being shown.

' Fig. 7 is a detail view of what I call a worm ism on the line 88 Fig.6.

screw forming part of the shift mechanism. Fig. -8' is a verticalsectional view of the power machine and part of the shift mechan Figs. 9and 10 are face views the clutch heads forming parts of the shiftmechanism.

.tifcal guides for t e cars. oil 'a'plank A, whichforms' the. base of Inthe drawin s A indicates the four ver- These guides rest connected partof the shift.

guides extend vertically through an aper-v ture in the floor or floors Babove. Extendlng over and across this a erture is a horse A This horseconsists 0 two base planks A fourrlegs A, two parallel timbers A and endbra'c'es A firmly secured together and temporarily secured to theflooring or joists B, on which the horse rests.

The guides A extend up between the par- .allels A and are'securedthereto. Between these guides are two cars, C and G which are free to bemoved vertically between the baseplank A. and the top of the horse AThese cars are suspended on a cable D. Between the parallels A androtatably supported therein are two-cable Wheels D, over which the cableD is free to run. The cable D passes from the whee'lsl) down in front ofthe two center guides and under two guide wheels D secured-side by sideon the base in the Fig. 3. From these two wheels the cable extends tothe driving wheel 1) around which it is looped several. times. Thiswheel D is secured'on the driving shaft of the power machine hereinafterdescribed. Rigidly secured to each of the wheels D 'isa ratchet wheel E,the inclination of the ratchet teeth on one wheel being opposite to thatof the other. Supported in the bearings E which are secured on thecentral part of the parallels A is a rocker shaft E having an arm Esecured on this rocker shaft outside the parallels is a cable wheel Eand a crank E Slidably secured on the inside face of this crank is alocking bar E This bar is adapted to be locked in an immovable positionon said crank by a pin E extending through said crank and through saidbar, and said bar is ada ted to be actuated by a lever E and a coile sring supported on said bar, the pur ose of w iich is hereinafterdescribed; pivotal y secured to the rocker shaft arm E are a air ofconnectin rods F. In the free end 0 each of these r0 s is a slot Fadapted to allow a pin F to slide freely therein. Each.

of these pins projects from the side of a pawl F These pawls arepivotally supported in bearings F secured on the parallels A The freeend of each of these pawls is adapted to dro into and engage the ratchetteeth of eae of the ratchet wheels E, and to be raised and therebyreleased from said wheels by said connecting rods F, as shown in Fig,

-K" as shown in Figs. 6 and 10.

5. Aflixed' on the frame E close to the hub of the crank E is a disk G,having two notches G and G These notches are adapted to admit the end ofthe locking bar E and to thereby hold said crank in a locked positionfor the )urpose herein after described.

Su ported on the wheel E is a shift cable H. flhis cable runs down infront of the two center guides A under the two small guide wheels H,side by side, secured to the base plank A between and to the'front ofthe cable wheels D only one of the wheels H is shown in the drawing.From these wheels the cable H passes around the wheel H on the powermachine and is secured thereto for the urpose hereinafter described. Thecable and cars C and C are operated by a horse power machine constructedand operated as hereinafter described.

The base of the machine consists of a rectangular frame J, the sides andends being halved into each other to form a flat base. On the sidepieces of this base are main shaft bearings J secured to the base, bybolts J Rotatably supported in these bearings is a shaft J the centralpart of this shaft is square. Rotatably supported on this shaft close-tosaid bearings are two gear wheels K and K the parts K and K forming thefemale parts of clutches movable -on said shaft.

111 the vertical face K of each of the parts K and K are two recesses KEach of these recesses has a deep radial face and a .base concentricwith the axis of said gear.

This base in each recess is inclined outward from the bottom of theradial face to the face Slidably suppb-rted on the square part of theshaft J are the male parts of the clutch. This consists of a sleeve Lhaving clutch heads L and L and a central disk L In each of these headsare two longitudinal apertures L parallel with the axis of said sleeve;slidably supported in each of these apertures is a pin L held in anormal position by a coiledspring L secured in said aperture by a plateL secured to the head by screws L These pins project under ressure ofthe springs from the face of the eads, and are a apted to enter therecesses K in the parts K and K of the gears K and K and the compressionof the springs by the pins permits the face K to force the pins inwardwhenever the movement of the sleeve on said shaft forces the points ofthe pins against said face between the recesses K Pivotally'supported onthe frame J is a forked lever M. The forked ends M of this lever areprovided with anti-friction rollers M which are adapted to engage eachside face of the disk L lever is provided also with a. roller MSupported on the frame J is a shaft N arranged parallel with the mainshaft J in the bearings N and having .a lever at one end.

Secured on the central part of thisshaft is a The other end of the- Vtor on the floor at the top of the hoisting worm gear N The spiralrecess of this gem" is adapted in depth and shape of the walls toreceive the roller M on the single end of the forked lever M and tolimit the rotative movement to less than one full revolution of theshaft N.- The walls of the end parts of this spiral are at right anglesto the axis of the sc aw and are thereby adapted to lock the leve a theend of each movement. Sup orted on the frame J are two guide wheels 8,-and O these wheels rotate freely on the stud shaft 1' secured in the box0 shown in Fig. 6. Th outer wheel 0 is adapted to guide the caitie D andthe wheel 0 to guide the cable H, the cables passing beneath said wheelscics to the ground so the horse may easily ste over them as he circlesaround the machine. Secured on the top of the frame J is a spider framebearing P. The center of this frame is elevated some distance above thesleeve L and disk L The top of this frame forms a horizontal bearing PRising vertically from the bearing P is a stud P", the end of which isthreaded and provided witha nut P Bonitably supported on the bearing Pand stud. if

of the spider P is a "main gear wheel R} the teeth of which mesh intothe gears K and IQ as shown in Fig. 8. The mesh of these gears ismaintained by rollers Rrevolubly secured on the studs R supported in thebearings JR These rollers are adapted to engage the smooth surface ofthe gear R and tothereby prevent it from rising from the gears beneathit. Forming a part of the hub R of this gear is stirrup R of the sweepto project through. On one of the spokes of the gear R is a verticalbrac he t R adapted to support the sweep in a hori zontal position. 'lheswee S is -;;:-rovid ;d with an eye bolt 5, to which t e harness of thehorse is attached and an eye bolt to which a chain or rod S can beattached to form a brace from one of the spokes of the gear for thepurpose of strengthening the sweep.

When my invention is constructed as described and the several partserected and connected its operation is as follows: The cable H isadjusted so that when the car (I is down and the car 0 is up the crank Eis locked in the notch G2 as shown in Fig. 2, an d the lever N is in ahorizontal position, the lever M is in the end of the worm gear andlocked in that position bythe walls of those parts of the gear being atright'angles with the axis. The sleeve is thereby held with the face ofthe clutch head L closeto tit. clutch face of the gear K thesliiflingpins under pressure of the springs being forced tethe full detact with t .e' radial faces therein, the pins Ti 'th of the rece'ssesK.and in con-- the other end of the sleeve just ciearingfitcia clutch faceof the 'gear K. Inthis posi-.;..cn

adapted to allow the end i.

- wheel.

moves the connecting rods F over to the right raising the pawl out ofcontact with the ratchet wheel E on the right and allows the pawl on theleft to drop on the ratchet'wheel on the left and to thereby prevent anyre verse movement of the ratchet and cable This movement of the cranktransmitted by the cable H to the shaft N'rotates the worm gear N movesthe lever M, which thereby forces the. sleeve to the left and its clutchhead L into engagement with the gear K, thereby locking those parts andreleasing the gear K which is then free to rotate on the shaft J Thehorse attached to the sweep S circles to' the left and thereby rotatesthe gear R, gear K, shaft J and cable driving wheel I), and cable D,thereby raising the car C and lowering the car C The horse is stoppedwhen the car 0 reaches the bottom and the pawl and ratchet wheel holdsthe load till it is removed. The crank when moved to .the right reversesthe movements of the machine just described. When it'is most convenientto operate the cars from the ground, the bar E is drawn by the lever Efrom contact with the disk G and locked by the insertion of the pin E inthe crank and bar, then the operator by moving the lever N controls themovements of the machine, the movements of the shaft N being transmittedto the rocker shaft and ratchets by the cable H. i

What I claim as new and desire to secure by Letters Patent is 1; In ahoisting machine of the kind described, the combination consisting of amain shaft having a cable wheel, said shaft being rotatabl-y supportedin suitable bearings and frame, the central part of said shaft beingangular in cross section; a double headed sleeve slidably supported onthe angular part of said shaft and rotatable with it, said sleeve havinga' central disk. Each head of said sleeve having longitudinal apertures'parallel with the axis of said sleeve and in each of said apertures, aspring pressed clutch pi'n extending normally from the vertical face ofeach of said heads and slidable therein; a pair of clutch gearsrotatably supported on said shaft between each bearing and. eachhead ofsaid sleeve, the vertical face of each of said gears having a pair ofrecesses concentric with the axis of said gears and inclined from theface of the gear to a depth therein adapted to receive and hold theclutch pins when projecting from the heads of said sleeve; a horizontalgear'supported above and meshed in both of said clutch gears having astirrup and bracket adapted to support a sweep therein; a worm gearshaft located in the same plane and parallel with said main shaft; aworm gear secured on the central part of said shaft and rotatable withit; a double ended lever pivotally supported in the same plane'andbetween said main and worm gear shafts, a single end of said lever beingengaged between the walls of said worm gear and the forked end of saidlever engaging both sides of the disk of said sleeve, the partialrotation of said worm gear operating said lever and thereby pressing itsforked end. against said disk and moving'sald sleeve on its shaft andone of its heads into contact with one of said clutch gears; means onthe ends of the worm gear shaft for partially rotating said shaft ineither direction and. thereby reversing the movement of said sleeve andthe rotationof said main shaft and cable wheel during the rotation ofsaid horizontal gear by'said sweep.

2. In a horse ower hoisting machine, the combination wit 1 the frame; ofa main shaft and wheel affixed thereon, sup orted in said frame; adouble headed sleeve aving acen tral disk, said sleeve being slid'ablysecured on said'shaft and adapted when rotated to turn said shaft withit a pair of clutch gears journaled on said shaft. adapted to he engagedby the heads of said sleeve; a main gear meshed with said clutch gearsand adapted to rotate them; means for rotating said main gear; a wormgear shaft and means for partially rotating it in either direction; aworm gear affixed on said shaft; a lever engaged with said worm gear andsaid disk on said sleeve adapted when'moved by rotary movement ofsaidworm gear to move saidsleeve in either direction on its shaft intocontact with one or other of said clutch gears.

3. In a horse ower hoisting machine, the combination wit supportedtherein, said shaft having a cable wheel; of a sleeve-slidably securedonsaid shaft, each end of said sleeve containing a pair of pins parallelwith said shaft, each of said pins bein slidable in said sleeve and.adapted to pro ect therefrom under pressure of a spring mclosed in saidsleeve ant. in contheframe-and main shaft tact with the pin, said sleevehaving a central disk by which it is inoved longitudinally on saidshaft; and a pair of worm gears journaled on said shaft adapted to beengaged alternately by the pins in said sleeve; a main gear wheelenmeshed with and adapted to rotate said gears on said shaft, a sweepattached to said gear by which it is rotated; a shift shaft and wormthereon, said shaft bein arallel with said main shaft, and a pivote everin en agement with said worm gear and with the risk on said sleevewhereb said sleeve is moved longitudinally on sai main. shaft and intoengagement with said gears, when, said lever is. actuated by the partialrotation of said shift shaft, and means for operating said shaft.

4. In a horsepower hoisting machine,. the combination with the frame,the main shaft and cable Wheel supported therein, a sleeve siidablysecured on said shaft, said sleeve .ng a pair of spring pressed pins inthe thereof; of a air of gears journaled on said'shaft, each of ralityof recesses in the'vertical face, sai 'recesses being concentric withthe axis of-the gears, and inclined from the face inwardto a depthsufficient toreceive said pins in said sleeve, the inclination .of saidrecesses being 'Aflit ted to regulate the sliding movement of pins intosaid recesses; and a main'gear wheel enmeshed with said gear, and asweep attached thereto whereby said gears are rotated; a shift shaft andworm gear thereon, and a pivoted'lever engaged by said worm gear and inengagement with the disk on said sleeve, whereby said sleeve is movedlongitudinally onsaid main shaft intoengagement with said gears, whensaid shift shaft is partly rotated, and means for operating said shaft.

5. In horse ower hoisting machine of the kind described, the combinationwith the frame, the main shaft therein, the sleeve, and gears thereon;of a main' gear wheel rotatably supported on a vertical shaft, saidwheel being provided with a stirrup and bracket adapted for the supportand adjustment'therein of a sweep for operating said wheel, said wheelbeing enmeshed with and adapted to rotate said gears on said main shaft;and a shift shaft and worm gear thereon, and a pivotal lever engaged bysaid worm gear and in engagement with said sleeve,-. whereby said sleeveis moved longitudinally on said shaft by the partial rotation of saidshift shaft, and means for operating said shaft.

6. In a horse ower hoisting machine of the kind describe the combinationwith the frame, main shaft therein, sleeve slidable said gears having alu-,

on said shaft having spring pgessed slidable pins therein, clutch gearsjournaled on said shaft having inclined concentric recesses adapted toadmit said pins, main gear wheel enmeshed with said gears, having astirrup and bracket; of a shaft supported in said frame parallel with,id main shaft and a worm gear thereon, said gear being adapted to admite end of a lever between its walls, the any"; orinclination of saidwalls being adapted to move the end of said lever horizontally and to.lock said lever at each end of said worm till said shaft and worm isreversed, and a lever pivotally supported on said frame, said leverhaving a single end engaged in said worm, and a forked end in engagementwith a disk part of said sleeve, whereby said sleeve is movedlongitudinally on said main shaft, and means for operating said shiftshaft.

7. In a horse power hoisting machine of the kind described, thecombination with the frame, a main shaft therein, a sleeve slidable onsaid shaft having spring pressed slidable pins in the ends thereof, apair of gears journaled on said shaft having inclined concentricrecesses adapted to admit said pins, a gear wheel having a stirrupandbracket for the support of a sweep, said gear wheel being enmeshed withsaidgears on said shaft; a.

shift shaft in said frame and worm gear thereon; of a centrally pivoteddouble ended lever supported on said frame, one end of said leveradapted to be engaged and moved by said wormgear, the other end beingadapted to engage said sleeve and to move it longitudinally in eitherdirection on said shaft when actuated by said worm on said shift shaft,

and means for operating said shaft, as described.

CHARLES E. GRANT. Witnesses JULrUs' RUBINsrnIN, Josnrn STAAB.

